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Tissues Class 9 mcq with Answers. We covered all the Tissues Class 9 mcq with Answers in this post for free so that you can practice well for the exam.
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mcq on Tissue for Class 9th Students
Which process takes place in the germ cells located in the seminiferous tubules?
(A) oogenesis
(B) spermatogenesis
(C) parthenogenesis
(D) both (B) and (C)
Option b – spermatogenesis
What is the effect of lactational amenorrhea?
(A) inhibits prolactin release
(B) stops milk secretion from the breast
(C) suppresses spermatogenesis
(D) prevents conception
Option d – prevents conception
What is the mechanism by which the contraceptive ‘Saheli’ works?
(A) an intrauterine device
(B) increases estrogen levels to block ovulation
(C) inhibits implantation by blocking estrogen receptors in the uterus
(D) a contraceptive taken after intercourse
Option c – inhibits implantation by blocking estrogen receptors in the uterus
During the industrial revolution in England, the dominance of dark-colored peppered moths over lighter ones illustrates
(A) natural selection favoring dark forms
(B) emergence of dark variants due to limited sunlight
(C) protective mimicry adaptation
(D) inheritance of dark traits from the Environment
Option a – natural selection favoring dark forms
When a child recovers from measles, the immunity developed is classified as
(A) natural acquired active
(B) artificial acquired active
(C) natural acquired passive
(D) artificial acquired passive
Option a – natural acquired active
How are male gametes generated in mammals?
(A) through mitosis
(B) via meiosis
(C) by both mitosis and meiosis
(D) without any form of cell division
Option b – via meiosis
What is a shared trait among centipedes, cockroaches, and crabs?
(A) jointed limbs and a chitin-based exoskeleton
(B) green glands and tracheae
(C) book lungs and antennae
(D) compound eyes and anal cerci
Option a – jointed limbs and a chitin-based exoskeleton
Which of the following features best describes Organisms in phylum Annelida?
(A) triploblastic, segmented bodies, bilateral symmetry
(B) triploblastic, flat bodies, acoelomate structure
(C) diploblastic, mainly aquatic, radial symmetry
(D) triploblastic, unsegmented, bilaterally symmetrical
Option a – triploblastic, segmented bodies, bilateral symmetry
Choose the correct option regarding intestinal villi and absorption.
(A) Only the first statement is correct
(B) Both statements are incorrect
(C) Both statements are correct
(D) Only the second statement is correct
Option c – Both statements are correct
Which intestinal cells release lysozyme for antibacterial action?
(A) argentaffin cells
(B) Paneth cells
(C) zymogen cells
(D) Kupffer cells
Option b – Paneth cells
Why are artificial reproductive technologies not always practical?
(A) high cost limits accessibility
(B) limited availability in India
(C) concerns regarding ethics, laws, and morality
(D) all of the above
Option d – all of the above
Select the accurate order of embryonic development.
(A) blastula → morula → zygote → gastrula → embryo
(B) zygote → blastula → morula → gastrula → embryo
(C) zygote → morula → blastula → gastrula → embryo
(D) gastrula → morula → zygote → blastula → embryo
Option c – zygote → morula → blastula → gastrula → embryo
What is the primary function of gel electrophoresis?
(A) assembling recombinant DNA with Vectors
(B) extracting DNA molecules
(C) slicing DNA into smaller segments
(D) sorting DNA fragments based on size
Option d – sorting DNA fragments based on size
In PCR, what are the primers composed of?
(A) Heat-denatured DNA fragments
(B) artificially synthesized oligonucleotides
(C) gene sequences being amplified
(D) enzymes that restrict DNA sequences
Option b – artificially synthesized oligonucleotides
Which of the following about plasmids is incorrect?
(A) they are small circular DNA not part of chromosomes
(B) they are exclusive to bacteria
(C) they can replicate on their own in a suitable host
(D) they carry survival-related genes for harsh conditions
Option b – they are exclusive to bacteria
Which statement about kidney excretion is accurate?
(A) descending Henle’s loop resists water movement
(B) distal tubule does not reabsorb bicarbonate
(C) nearly all glomerular filtrate is reabsorbed in tubules
(D) ascending Henle’s loop blocks electrolyte movement
Option c – nearly all glomerular filtrate is reabsorbed in tubules
Point out the incorrect statement about visual photopigments.
(A) retinal absorbs Light in visual pigments
(B) rods have rhodopsin; cones have three pigments
(C) retinal is derived from Vitamin C
(D) rhodopsin is found only in rods and is purple-red in color
Option c – retinal is derived from Vitamin C
Which hormone is not produced by the anterior pituitary?
(A) prolactin
(B) thyroid-stimulating hormone
(C) growth hormone
(D) vasopressin
Option d – vasopressin
Why are human testes positioned in the scrotum outside the abdomen?
(A) to maintain lower temperature than internal body
(B) to avoid pressure from internal organs
(C) to allow epididymis expansion
(D) to act as a male secondary sex trait
Option a – to maintain lower temperature than internal body
A patient experiences nasal congestion, headache, hoarseness, and sore throat. This suggests an infection by
(A) Plasmodium
(B) Adenovirus
(C) Salmonella
(D) Rhinovirus
Option d – Rhinovirus
Iodine deficiency leads to which of the following conditions?
(A) Goitre
(B) Addison’s Disease
(C) Cretinism
(D) Acromegaly
Option a – Goitre
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